There is a proverbial ticking time bomb in our midst. It's the toxic lifestyle that is wreaking havoc on our nation's health and well-being and posing an equal threat to everyone from the very young to the very old. In today's fast-food-obsessed, couch-potato culture, two-thirds of all adults and one-third of all children are either overweight or obese, rates of diabetes and heart disease are soaring, and the future for many of us looks dismal.